The JPMorgan memo was written by the bank's operating committee, which includes CEO Jamie Dimon, and sent to the firm's staff globally on Sunday.

Here is the full text of the memo, which was seen by Business Insider:

"Message from the Operating Committee:

"In light of recent executive orders in the United States regarding immigration policy, we want every one of you to know of our unwavering commitment to the dedicated people working here at JPMorgan Chase.

"This includes a number of our outstanding employees — all of whom have adhered to our country's immigration and employment processes — who have come to the United States to serve our company, clients and communities.

"Over the weekend, we have worked to reach out to all JPMorgan Chase employees on sponsored visas who are potentially impacted by the recent orders. We understand the situation is evolving quickly, so if you have any concerns about your own situation and have not been contacted, please reach out to your local immigration specialist or HR team.

"With more than 140,000 employees in the United States alone, we are grateful for the hard work and sacrifices made to keep our country safe. At the same time, we understand that our country, economy and wellbeing are strengthened by the rich diversity of the world around us, where we are dedicated to serving customers and communities in more than 100 countries every day.

"Thank you."

A source at the bank told Business Insider that JPMorgan had also set up a hotline for workers who think they may be affected by the new plans.